摘要
介绍了中国石化青岛炼油化工有限责任公司4.1 Mt/a柴油加氢精制装置利用抚顺石油化工研究院开发的深度脱硫催化剂进行柴油质量升级的情况。对装置在产品质量升级后出现催化剂失活速率加快、原料携带硅对催化剂活性的影响、升级凸显的全厂柴油组分十六烷值不平衡等问题进行了分析。结果认为:为适应柴油质量升级,应用脱硫深度高的催化剂和降低反应空速是有效手段,但是全厂的柴油十六烷值平衡难点主要是在催化裂化柴油的加工策略上,可以考虑用加氢裂化装置加工部分催化裂化柴油或用高十六烷值的加氢裂化柴油调合来解决该问题,但是可能会提高全厂加工成本。另外,焦化汽油/柴油携带的硅会导致加氢催化剂中毒,严重缩短催化剂寿命,为解决这一问题,焦化装置应降低消泡剂的使用量或使用低硅消泡剂,加氢装置应提高容硅能力,通过增加捕硅剂装填量来避免精制催化剂过早因硅中毒失活。
The running of a 4. 1 Mt/a diesel hydrogenation unit with deep desulfurization catalyst for quality upgrading was introduced. In the diesel quality upgrading process, the deactivation speed of cat- alyst became faster and the Si in coker gasoline made catalyst poisoned. In the mean while, the balance of diesel cetane number was broken. To solve above problems, the following countermeasures could be taken. Firstly, the space velocity should be decreased. Secondly, the Si content in coker gasoline should be controlled. Thirdly, the diesel cetane balance of the refinery plant should be optimized.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2015年第9期31-37,共7页
Petroleum Processing and Petrochemicals
关键词
柴油加氢
质量升级
深度脱硫
硅中毒
十六烷值
diesel hydrogenation
quality upgrading
deep desulfurization
silicon poisoningcetane number
